746
FZUS63 KMQT 292001
GLFLS
OPEN LAKE FORECAST FOR LAKE SUPERIOR
NATIONAL WEATHER SERVICE MARQUETTE MI
400 PM EDT SUN MAR 29 2026
FOR WATERS BEYOND 5 NAUTICAL MILES OF SHORE ON LAKE SUPERIOR.
WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE
HIGHEST 1/3 OF THE WAVE SPECTRUM. OCCASIONAL WAVE HEIGHT IS THE
AVERAGE OF THE HIGHEST 1/10 OF THE WAVE SPECTRUM.
SYNOPSIS
A 29.7 INCH LOW OVER THE CENTRAL PLAINS THIS AFTERNOON LIFTS A 30.0
INCH TROUGH OVER LAKE SUPERIOR. THIS TROUGH LINGERS OVER THE GREAT
LAKES AND SLOWLY DEEPENS WITH TIME EARLY THIS WEEK BEFORE THE LOW
PUSHES THROUGH AT 29.6 INCHES ON TUESDAY. AS THE LOW TRACKS ALONG
THE ST. LAWRENCE SEAWAY TUESDAY NIGHT, 30.3 INCH HIGH PRESSURE
BUILDS OVER THE NORTHERN PLAINS, GRADUALLY BUILDING PRESSURE OVER
NORTHERN ONTARIO TO 30.6 INCHES BY WEDNESDAY. BY THURSDAY, THE HIGH
BUILDS TO 30.8 INCHES OVER NORTHERN QUEBEC WHILE A WEAK 29.9 INCH
LOW PASSES OVER THE SOUTHERN GREAT LAKES BASIN AND A 29.3 INCH LOW
PRESSURE ORGANIZES IN THE LEE OF THE ROCKIES.
LSZ162-300800-
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND
PORTAGE MN BEYOND 5NM-
400 PM EDT SUN MAR 29 2026 /300 PM CDT SUN MAR 29 2026/
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
TONIGHT
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST 15 TO
25 KNOTS IN THE AFTERNOON, THEN INCREASING TO 20 TO 30 KNOTS
LATE. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY NIGHT
EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST LATE.
A CHANCE OF RAIN SHOWERS, SNOW SHOWERS, POSSIBLY MIXED WITH
FREEZING RAIN AND SLEET AFTER MIDNIGHT. WAVES BUILDING TO 4 TO
7 FEET OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
TUESDAY
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN SHOWERS, FREEZING
RAIN AND SLEET THROUGH EARLY AFTERNOON. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
NORTHWEST WINDS 10 TO 20 KNOTS VEERING NORTH
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY
NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST BY MID
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO
2 TO 4 FEET.
WEDNESDAY NIGHT
EAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
THURSDAY
EAST GALES TO 40 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 10 TO 14 FEET OCCASIONALLY TO 18 FEET, THEN
SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN AND SNOW
SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
LSZ263-300800-
LAKE SUPERIOR FROM SAXON HARBOR WI TO UPPER ENTRANCE TO PORTAGE
CANAL MI 5NM OFF SHORE TO THE US/CANADIAN BORDER INCLUDING ISLE
ROYALE NATIONAL PARK-
400 PM EDT SUN MAR 29 2026
LATE THIS AFTERNOON
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES 1 TO
3 FEET SUBSIDING TO CALM TO 2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST LATE.
WAVES CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO
20 KNOTS IN THE AFTERNOON, THEN BECOMING EAST 15 TO 25 KNOTS
LATE. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
MONDAY NIGHT
EAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN AND
SNOW SHOWERS, POSSIBLY MIXED WITH FREEZING RAIN AFTER MIDNIGHT.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY
NORTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN
SHOWERS THROUGH EARLY AFTERNOON. A CHANCE OF SNOW SHOWERS,
POSSIBLY MIXED WITH FREEZING RAIN AND SLEET. WAVES BUILDING TO
5 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
NORTH WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
WEDNESDAY
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO
1 TO 3 FEET.
WEDNESDAY NIGHT
EAST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
THURSDAY
EAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET, THEN
SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.
WAVES SUBSIDING TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.
LSZ264-300800-
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-
400 PM EDT SUN MAR 29 2026
LATE THIS AFTERNOON
SOUTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
NORTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.
MONDAY
NORTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO
20 KNOTS LATE. WAVES BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO
CALM TO 2 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS. A CHANCE OF
RAIN SHOWERS AND FREEZING RAIN AFTER MIDNIGHT. WAVES BUILDING TO
4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TUESDAY
EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF FREEZING RAIN
THROUGH EARLY AFTERNOON. A CHANCE OF SNOW SHOWERS, POSSIBLY MIXED
WITH SLEET. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO
10 FEET, THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO
2 TO 4 FEET.
WEDNESDAY
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 5 TO
15 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
WEDNESDAY NIGHT
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
THURSDAY
EAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 5 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS.
A CHANCE OF SNOW SHOWERS. A CHANCE OF RAIN SHOWERS. WAVES
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN BUILDING TO
5 TO 8 FEET OCCASIONALLY TO 10 FEET.
LSZ265-300800-
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI
BEYOND 5NM FROM SHORE-
400 PM EDT SUN MAR 29 2026
LATE THIS AFTERNOON
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
SOUTHEAST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT, THEN VEERING NORTH LATE. WAVES CALM TO 2 FEET.
MONDAY
NORTH WINDS 10 TO 20 KNOTS VEERING EAST LATE. WAVES
BUILDING TO 1 TO 3 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
TUESDAY
EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. RAIN SHOWERS LIKELY THROUGH EARLY AFTERNOON. A CHANCE
OF SNOW SHOWERS, POSSIBLY MIXED WITH FREEZING RAIN. A CHANCE OF
RAIN SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.
WEDNESDAY
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY
EAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO
35 KNOTS. FREEZING SPRAY. A CHANCE OF SNOW SHOWERS. WAVES
BUILDING TO 9 TO 12 FEET OCCASIONALLY TO 15 FEET, THEN SUBSIDING
TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.
FRIDAY
EAST WINDS 20 TO 30 KNOTS VEERING SOUTHEAST. A CHANCE
OF RAIN SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO
8 FEET, THEN BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.
LSZ266-300800-
LAKE SUPERIOR EAST OF A LINE FROM MANITOU ISLAND TO MARQUETTE MI
AND WEST OF A LINE FROM GRAND MARAIS MI TO THE US/CANADIAN BORDER
BEYOND 5NM FROM SHORE-
400 PM EDT SUN MAR 29 2026
LATE THIS AFTERNOON
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
SOUTH WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER
MIDNIGHT, THEN VEERING NORTH LATE. WAVES BUILDING TO 1 TO 3 FEET.
MONDAY
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. A SLIGHT CHANCE OF
FREEZING RAIN AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET
OCCASIONALLY TO 9 FEET.
TUESDAY
EAST WINDS 20 TO 30 KNOTS BACKING NORTHEAST BY MID
AFTERNOON. SNOW SHOWERS, POSSIBLY MIXED WITH RAIN THROUGH EARLY
AFTERNOON. A SLIGHT CHANCE OF FREEZING RAIN, POSSIBLY MIXED WITH
SLEET. A CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN BY MID
AFTERNOON. WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET,
THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
TUESDAY NIGHT
NORTH WINDS 20 TO 30 KNOTS. FREEZING SPRAY AFTER
MIDNIGHT. WAVES BUILDING TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.
WEDNESDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. FREEZING SPRAY THROUGH EARLY
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
THURSDAY
EAST WINDS 20 TO 30 KNOTS. FREEZING SPRAY. A CHANCE
OF SNOW SHOWERS. WAVES BUILDING TO 6 TO 10 FEET OCCASIONALLY TO
13 FEET.
FRIDAY
EAST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO 3 TO
6 FEET OCCASIONALLY TO 8 FEET, THEN BUILDING TO 5 TO 8 FEET
OCCASIONALLY TO 10 FEET.
LSZ267-300800-
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF
SHORE TO THE US/CANADIAN BORDER-
400 PM EDT SUN MAR 29 2026
LATE THIS AFTERNOON
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM
TO 2 FEET.
TONIGHT
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH LATE. WAVES
CALM TO 2 FEET.
MONDAY
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST IN THE
AFTERNOON. WAVES CALM TO 2 FEET.
MONDAY NIGHT
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO
30 KNOTS. A CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW. A
SLIGHT CHANCE OF FREEZING RAIN AFTER MIDNIGHT. WAVES BUILDING TO
3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TUESDAY
EAST WINDS 20 TO 30 KNOTS BECOMING NORTHEAST 15 TO
25 KNOTS BY MID AFTERNOON. RAIN SHOWERS, POSSIBLY MIXED WITH SNOW
THROUGH EARLY AFTERNOON. A SLIGHT CHANCE OF FREEZING RAIN. A
CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW BY MID
AFTERNOON. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.
TUESDAY NIGHT
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO
30 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET
OCCASIONALLY TO 8 FEET.
WEDNESDAY
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.
WEDNESDAY NIGHT
NORTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET
OCCASIONALLY TO 7 FEET.
THURSDAY
EAST WINDS 20 TO 30 KNOTS. A CHANCE OF SNOW SHOWERS.
WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
FRIDAY
EAST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO 2 TO
4 FEET, THEN BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.
LSZ261-300200-
MAFOR 2921/
SUPERIOR WEST 12110 13100 11110 11120 11230. WAVES 1 TO 3 FEET
TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET MONDAY.
SUPERIOR NORTH CENTRAL 11310 11210 13810 13110. WAVES 1 TO 3
FEET.
SUPERIOR SOUTH CENTRAL 11300 11400 11610 11710 12810 12110. WAVES
1 TO 3 FEET.
SUPERIOR EAST 11310 12410 11710 12810 12110. WAVES 1 TO 3 FEET.
WFO MQT
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MQT/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
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